Industrial immersion heaters are a fast and efficient way of heating up various liquid solutions in processing equipment, large tanks and containers in many industries. Heating up liquids using direct heat transfer allows for the liquid medium to quickly reach the desired temperature using electric heating elements such as flanged heaters, screwplug heaters, over-the-side heaters or circulation heaters. Flanged heaters can hold multiple hairpin elements mounted onto the side of a metal tank. The versatility of immersion heater designs allows them to offer up to 750 KW of power on a single unit. Circulation (inline) heaters use flanged immersion heaters or screwplug heaters within a vessel chamber to heat up liquids from an inlet and expels the heated liquid through an outlet using the force of a pump to allow easy circulation. The circuit of running liquid is then reheated to reach a target temperature.